JP3350434B2 - Main circuit switchgear and its inspection method - Google Patents
Main circuit switchgear and its inspection methodInfo
- Publication number
- JP3350434B2 JP3350434B2 JP04366298A JP4366298A JP3350434B2 JP 3350434 B2 JP3350434 B2 JP 3350434B2 JP 04366298 A JP04366298 A JP 04366298A JP 4366298 A JP4366298 A JP 4366298A JP 3350434 B2 JP3350434 B2 JP 3350434B2
- Authority
- JP
- Japan
- Prior art keywords
- main circuit
- section
- conductor
- fixed
- disconnecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、主回路開閉装置
の改良に係わり、特に発電プラントの低圧同期方式にお
いて主発電機と主変圧器との間に用いられる発電機の主
回路開閉装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a main circuit switching device, and more particularly to a main circuit switching device of a generator used between a main generator and a main transformer in a low-voltage synchronous system of a power plant.
【０００２】[0002]
【従来の技術】図１１は、従来一般的に採用されている
発電プラントの単線結線図である。図において、Ｇは発
電機、Ｍ．Ｔｒは主変圧器、Ｈ．Ｔｒは所内変圧器、
Ｓ．Ｔｒは起動変圧器、Ｓ１〜Ｓ４は遮断器、ＢＵＳは
母線、Ｌ１、Ｌ２は送電線である。発電機Ｇと主変圧器
Ｍ．Ｔｒが直結されていて、発電機Ｇの起動に際して
は、起動変圧器Ｓ．Ｔｒ及び所内変圧器Ｈ．Ｔｒを経由
して発電機Ｇに電力を供給し、送電線Ｌ１の電圧と同期
をとって遮断器Ｓ１により、発電機Ｇを主変圧器Ｍ．Ｔ
ｒ経由で送電線Ｌ１に投入する。2. Description of the Related Art FIG. 11 is a single-line diagram of a power plant generally used conventionally. In the figure, G is a generator, M. Tr is the main transformer; Tr is an in-house transformer,
S. Tr is a starting transformer, S1 to S4 are circuit breakers, BUS is a bus, and L1 and L2 are transmission lines. Generator G and main transformer M. Tr is directly connected, and when starting the generator G, the starting transformer S. Tr and in-house transformer H. Power is supplied to the generator G via the Tr, and the generator G is synchronized with the voltage of the power transmission line L1 by the circuit breaker S1 to connect the generator G to the main transformer M. T
and into the transmission line L1 via r.
【０００３】ところで、上記のような高圧同期方式に代
わって、最近、図１２の単線結線図に示すような低圧同
期方式が採用されるようになってきた。この場合、発電
機Ｇには主回路開閉装置Ａが設置される。図１３に主回
路開閉装置Ａの単線結線図を示す。図１３において、Ｂ
は主回路遮断器、Ｃは主回路断路器、Ｄは遮断器側接地
装置、Ｅは断路器側接地装置である。ここで、主回路遮
断器Ｂ、主回路断路器Ｃ、遮断器側及び断路器側接地装
置Ｄ、Ｅをそれぞれ個別の単体機器としてこれらを寄せ
集めるよりも、これら全てを一体化して一体形に構成す
る方が合計の据付面積を小さくでき、また製造コストが
安くなるため、多く採用される方向にある。Incidentally, instead of the above-described high-voltage synchronization system, a low-voltage synchronization system as shown in a single-line diagram in FIG. 12 has recently been adopted. In this case, the generator G is provided with the main circuit switching device A. FIG. 13 shows a single-line diagram of the main circuit switching device A. In FIG. 13, B
Is a main circuit breaker, C is a main circuit disconnector, D is a breaker side grounding device, and E is a disconnector side grounding device. Here, the main circuit breaker B, the main circuit disconnector C, the circuit breaker side and the disconnector side grounding devices D and E are not combined as individual single devices, but all of them are integrated and integrated. Since the configuration can reduce the total installation area and reduce the manufacturing cost, the configuration is in the direction of being often adopted.
【０００４】図１４は、例えば特開平８−３０６２８２
号公報に記載された一体形の主回路開閉装置の断面図で
ある。図１４において、１は遮断部、２は絶縁筒、３は
絶縁筒２の一端に固定された遮断部固定側導体、４は絶
縁筒２の他端に固定された遮断部可動側導体、５は遮断
部固定側導体３に固定された固定接触子、６は可動接触
子であり、固定接触子５と接離可能に遮断部可動側導体
４に取り付けられている。絶縁筒２、遮断部固定側導体
３、遮断部可動側導体４、固定接触子５及び可動接触子
６で遮断部１を構成している。FIG. 14 shows, for example, Japanese Patent Application Laid-Open No. 8-306282.
FIG. 1 is a cross-sectional view of an integrated main circuit switching device described in Japanese Patent Application Laid-Open Publication No. HEI 10-115,036. 14, reference numeral 1 denotes a blocking portion, 2 denotes an insulating tube, 3 denotes a blocking portion fixed-side conductor fixed to one end of the insulating tube 2, 4 denotes a blocking portion movable-side conductor fixed to the other end of the insulating tube 2, 5. Is a fixed contact fixed to the cut-off portion fixed-side conductor 3, and 6 is a movable contact, which is attached to the cut-off portion movable-side conductor 4 so as to be able to contact and separate from the fixed contact 5. The insulating part 1 is constituted by the insulating cylinder 2, the fixed part conductor 3 on the cutoff part, the movable part conductor 4 on the cutoff part, the fixed contact 5 and the movable contact 6.
【０００５】８は断路部、９は遮断部可動側導体４と一
体的に形成された断路部固定側導体で、遮断部可動側導
体４との間には隔壁１０が設けられ、遮断部１側には六
弗化硫黄（以下ＳＦ６と記す）ガスなどの絶縁性ガスが
封入されている。１１は断路部固定側導体９と離隔して
設置された断路部可動側導体、１２は可動導体であり、
断路部固定側導体９と接離可能に断路部可動側導体１１
に取り付けられている。断路部固定側導体９、断路部可
動側導体１１及び可動導体１２で断路部８を構成してい
る。１４は遮断部固定側導体３を接地する第１の接地導
体、１５は断路部可動側導体１１を接地する第２の接地
導体である。Reference numeral 8 denotes a disconnecting portion, 9 denotes a disconnecting portion fixed side conductor integrally formed with the interrupting portion movable side conductor 4, a partition 10 is provided between the disconnecting portion movable side conductor 4, An insulating gas such as sulfur hexafluoride (hereinafter, referred to as SF6) gas is sealed on the side. Reference numeral 11 denotes a disconnecting portion movable-side conductor that is installed separately from the disconnecting portion fixed-side conductor 9, and 12 denotes a movable conductor.
Disconnectable section movable side conductor 11 so as to be able to contact and separate from disconnecting section fixed side conductor 9
Attached to. The disconnecting portion 8 is composed of the disconnecting portion fixed side conductor 9, the disconnecting portion movable side conductor 11 and the movable conductor 12. Reference numeral 14 denotes a first ground conductor that grounds the cut-off portion fixed-side conductor 3, and reference numeral 15 denotes a second ground conductor that grounds the disconnection-portion movable side conductor 11.
【０００６】１６は支持架台、１７、１８は遮断部１と
断路部固定側導体９とが一体となった部分を支持架台１
６上に支持する第１と第２の支持絶縁物、１９は断路部
可動側導体１１と可動導体１２を支持架台１６上に支持
する第３の支持絶縁物である。２１は遮断部操作装置
で、第１の絶縁操作ロッド２２を有し、遮断部１の可動
接触子６を操作する。２３は断路部操作装置で、第２の
絶縁操作ロッド２４を有し、断路部８の可動導体１２を
操作する。２５、２６は第１と第２の接地部操作装置
で、第１と第２の接地導体１４、１５を操作する。Reference numeral 16 denotes a support base, and reference numerals 17 and 18 denote a part where the breaking section 1 and the disconnecting section fixed side conductor 9 are integrated.
Reference numeral 19 denotes a first and a second support insulator supported on the supporting member 6, and a third support insulator 19 supporting the disconnecting portion movable side conductor 11 and the movable conductor 12 on the support base 16. Reference numeral 21 denotes a breaking section operating device having a first insulating operation rod 22 for operating the movable contact 6 of the breaking section 1. Reference numeral 23 denotes a disconnection section operation device having a second insulating operation rod 24 for operating the movable conductor 12 of the disconnection section 8. Reference numerals 25 and 26 denote first and second grounding section operation devices for operating the first and second grounding conductors 14 and 15, respectively.
【０００７】遮断部１と断路部８は支持架台１６上で、
遮断部固定側導体３、遮断部可動側導体４、断路部固定
側導体９、断路部可動側導体１１の順に配置されるとと
もに、支持架台１６には各操作装置が、第１の接地操作
装置２５、遮断部操作装置２１、断路部操作装置２３、
第２の接地部操作装置２６の順に収容され取り付けられ
ている。また、これら全体は外被を有する収容箱３２に
収容されている。以上のように、図１３の主回路遮断器
Ｂ、主回路断路器Ｃ、遮断器側及び断路器側接地装置
Ｄ、Ｅが一体化された主回路開閉装置Ａが構成されてい
る。このような主回路開閉装置Ａは例えば発電機Ｇの定
格電圧と同じ定格電圧２２ＫＶ、電流４０ＫＡで図１１
における左右方向の長さＬが３ｍ、奥行きが３ｍ、高さ
Ｈが１．３ｍ程度の大きさのものである。The blocking unit 1 and the disconnecting unit 8 are mounted on a support base 16,
The cut-off portion fixed-side conductor 3, the cut-off portion movable-side conductor 4, the disconnection portion fixed-side conductor 9, and the disconnection portion movable-side conductor 11 are arranged in this order, and the support gantry 16 includes a first grounding operation device. 25, interruption unit operating device 21, disconnection unit operating device 23,
The second grounding section operating device 26 is accommodated and mounted in order. Further, the entirety is housed in a housing box 32 having a jacket. As described above, the main circuit switchgear A in which the main circuit breaker B, the main circuit disconnector C, and the circuit breaker side and disconnector side grounding devices D and E of FIG. 13 are integrated. Such a main circuit switchgear A has a rated voltage of 22 KV, which is the same as the rated voltage of the generator G, and a current of 40 KA, for example, as shown in FIG.
Has a length L of 3 m, a depth of 3 m, and a height H of about 1.3 m.
【０００８】[0008]
【発明が解決しようとする課題】上記のように構成され
た従来の一体形の主回路開閉装置は、遮断器、断路器、
接地装置をそれぞれ単体の機器で構成した場合よりも、
据付面積の縮小や製造コストの低減の点で有利である
が、保守点検の容易さの面で問題点がある。すなわち、
発電機が停止し断路器が開離していても、所内電源確保
のために図１２に示すＳ１が投入された状態であれば、
図１４に示す断路部可動体１２側が電気的に充電される
ことになり、電気的充電部が露出した状態では、外被に
設けられた点検蓋などを開けて内部機器の保守点検を容
易に行えないということである。このような機器の保守
点検には、図１２に示す遮断器Ｓ１を開離することによ
り可能となる。しかしその場合、図１２の母線ＢＵＳが
停電し所内電源も切られることになり、別途保守点検用
の動力源の確保を要するなど、コストアップ要因となる
問題点がある。The conventional integrated main circuit switchgear configured as described above includes a circuit breaker, a disconnector,
Compared to the case where each grounding device is composed of a single device,
This is advantageous in reducing the installation area and the manufacturing cost, but has a problem in terms of easy maintenance and inspection. That is,
Even if the generator is stopped and the disconnector is open, if S1 shown in FIG.
The disconnecting portion movable body 12 shown in FIG. 14 is electrically charged, and in a state where the electrical charging portion is exposed, an inspection cover or the like provided on the outer cover is opened to facilitate maintenance and inspection of internal devices. That is not possible. Such equipment maintenance and inspection can be performed by opening circuit breaker S1 shown in FIG. However, in this case, the bus BUS in FIG. 12 loses power and the power in the station is also cut off, which requires a separate power source for maintenance and inspection.
【０００９】この発明は、上記のような問題点を解消す
るためになされたもので、一般的に遮断部の保守点検が
頻繁に行われることに対して、断路部の保守点検はそれ
ほど頻繁に行う必要がないことから、断路部の一部が電
気的に充電状態であっても、安全、容易にかつ安価に遮
断部の保守点検が可能な主回路開閉装置を得ることを目
的とする。さらに、断路部の一部が電気的に充電状態で
あっても遮断部を安全に点検できる主回路開閉装置の点
検方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In general, the maintenance and inspection of a disconnection part are performed so frequently, while the maintenance and inspection of a disconnection part are frequently performed. An object of the present invention is to provide a main circuit opening / closing device that can safely, easily, and inexpensively perform maintenance and inspection of an interrupting section even when a part of a disconnection section is electrically charged because it is not necessary to perform the operation. It is still another object of the present invention to provide a method of inspecting a main circuit opening / closing device that can safely inspect a breaking unit even when a part of a disconnecting unit is electrically charged.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に、本発明の主回路開閉装置は、互いに対向して配設さ
れ断路部可動導体を介して接離可能にされた第一と第二
の断路部固定導体を有する断路部及び第二の断路部固定
導体と一体に形成されて一体化固定導体を構成する第一
の遮断部固定導体とこの第一の遮断部固定導体に対向し
て配置され第一の遮断部固定導体と遮断部可動接触子を
介して接離可能にされた第二の遮断部固定導体を有する
遮断部を設けた主回路開閉部、収容部に主回路開閉部を
収容する収容箱及びこの収容箱内の一体化固定導体の外
周側に設けられ収容部を断路部を収容する断路部収容部
と遮断部を収容する遮断部収容部とに区切る区切り部材
を備え、発電プラントに用いられ主発電機が主回路開閉
部を介して主変圧器に接続されるものである。 第二の断
路部固定導体と第一の遮断部固定導体とを一体に形成し
て一体化固定導体を構成したので装置をコンパクトにで
き、かつ遮断部収容部は区切り部材により断路部収容部
と区切られているので、断路部が充電されていても安全
に点検できる。断路部を充電したままでもよいので、遮
断部の点検のために断路部につながる電源、例えば所内
電源を停止させなくてよく、この所内電源を保守点検用
の動力として利用することも可能である。In order to achieve the above object, a main circuit opening and closing device according to the present invention is provided with first and second main and open / close devices which are arranged opposite to each other and which can be connected to and separated from each other via a disconnecting portion movable conductor . Disconnecting section having second disconnecting section fixing conductor and second disconnecting section fixing
First formed integrally with the conductor to form an integrated fixed conductor
Opposing the interrupter fixed conductor and the first interrupter fixed conductor.
The first fixed conductor and the movable contact
The main circuit switch section having a <br/> blocking portion having a second cut-off portion fixed conductors enables contact and separation via, containing box and integral in the containing box for accommodating the main circuit switch section to the housing part Outside the fixed conductor
A partition member is provided on the peripheral side to divide the housing section into a disconnection section housing section that houses the disconnecting section and a cutoff section housing section that houses the cutoff section, and the main generator used in the power generation plant opens and closes the main circuit.
It is connected to the main transformer through the section. Second break
The road fixed conductor and the first cutoff fixed conductor are integrally formed.
To make the equipment compact
In addition, since the cut-off portion housing portion is separated from the disconnection portion housing portion by the separating member, it can be safely inspected even if the disconnection portion is charged. Since the disconnecting portion may be kept charged, it is not necessary to stop the power supply connected to the disconnecting portion for inspecting the breaking portion, for example, the in-plant power source, and the in-plant power source can be used as power for maintenance and inspection. .
【００１１】そして、第一及び第二の断路部固定導体並
びに第一及び第二の遮断部固定導体を所定方向に直線状
に配設したものである。このように各固定導体を直線状
に配設することにより装置を一層コンパクトにできる。The first and second disconnecting portion fixed conductors and the first and second blocking portion fixed conductors are linearly arranged in a predetermined direction . In this way, each fixed conductor is linear
The arrangement can be made more compact.
【００１２】さらに、区切り部材を所定方向と交差する
方向から挿脱しうるようにしたものである。遮断部を点
検するときに区切り部材を挿入して断路部と区切って安
全に作業ができる。点検作業の終了後、区切り部材を取
出せば元通りに絶縁距離を確保できる。Further, the partition member can be inserted and removed from a direction intersecting a predetermined direction. When inspecting the blocking part, a separating member is inserted to separate the disconnecting part from the disconnection part, so that the work can be performed safely. After the inspection work is completed, if the separating member is removed, the insulation distance can be secured as before.
【００１３】また、所定方向が水平方向となるように配
設するとともに、区切り部材に切欠き部を設け、区切り
部材を切欠き部が一体化固定導体に嵌合するようにして
鉛直方向上方から挿脱しうるようにしたものである。ホ
イスト等の吊上げ手段により容易に鉛直方向からの挿脱
を行うことができる。[0013] Further, the partition member is disposed so that the predetermined direction is horizontal, and a notch portion is provided in the partition member, and the partition member is inserted from above in the vertical direction so that the notch portion is fitted to the integrated fixed conductor. It can be inserted and removed. With a lifting means such as a hoist, insertion and removal from the vertical direction can be easily performed.
【００１４】そして、所定方向が水平方向となるように
配設するとともに、区切り部材をそれぞれ切欠き部を設
けた第一及び第二の切欠き部付区切り部材にて構成し、
第一の切欠き部付区切り部材を水平方向の一方側から挿
入して一体化固定導体にその切欠き部を嵌合し第二の切
欠き部付区切り部材を水平方向の他方の側から挿入して
一体化固定導体にその切欠き部を嵌合したものである。
一体化固定導体に水平方向から第一及び第二の区切り部
材を嵌合するようにすることにより、区切り部材を容易
に設けることができるとともに一体化固定導体の周囲に
おいてより完全に断路部と遮断部とを区切ることができ
る。[0014] The predetermined direction is horizontal, and the partition member is formed of first and second notched partition members each having a notch.
Insert the first notch separating member from one side in the horizontal direction, fit the notch into the integrated fixed conductor, and insert the second notching separator from the other side in the horizontal direction. The notch is fitted to the integral fixed conductor.
By fitting the first and second partition members into the integrated fixed conductor from the horizontal direction, the partition member can be easily provided, and the disconnection portion and the disconnection can be more completely interrupted around the integrated fixed conductor. Department can be separated.
【００１５】さらに、本発明の主回路開閉装置の点検方
法は、互いに対向して配設され断路部可動導体を介して
接離可能にされた第一と第二の断路部固定導体を有する
断路部及び互いに対向して配設され遮断部可動接触子を
介して接離可能にされた第一と第二の遮断部固定導体を
有し第一の遮断部固定導体が第二の断路部固定導体に電
気的に直列に接続された遮断部を設けた主回路開閉部並
びに収容部に主回路開閉部を収容する収容箱を備え、発
電プラントに用いられ主発電機が主回路開閉部を介して
主変圧器に接続されるものである主回路開閉装置の点検
に際し、断路部を開放してから収容箱内に区切り部材を
挿入し収容部を断路部を収容する断路部収容部と遮断部
を収容する遮断部収容部とに区切ってから遮断部の点検
を行うようにしたものである。Further, the inspection method of the main circuit opening / closing device of the present invention is directed to a disconnection having first and second disconnection section fixed conductors which are arranged to face each other and can be separated from each other via a disconnection section movable conductor. And a first and a second fixing part fixed conductor which are disposed opposite to each other and which can be connected and separated via a separating part movable contact, and the first breaking part fixing conductor fixes the second disconnecting part. A main circuit opening / closing section provided with a breaking section electrically connected in series to the conductor, and a housing box for housing the main circuit opening / closing section in the housing section ;
The main generator used in the power plant
When inspecting the main circuit switchgear that is connected to the main transformer, open the disconnection section, insert the partition member into the storage box , and then connect the disconnection section storage section and the cutoff section that store the disconnection section to the storage section. Inspection of the cutoff section is performed after the cutoff section is separated from the cutoff section housing section.
【００１６】また、本発明の主回路開閉装置の点検方法
は、導電材料製の区切り部材を挿入する工程と、区切り
部材を接地する工程と、を設けたものである。点検作業
時等に導電性の区切り部材を挿入して、かつ区切り部材
を接地して一層作業の安全性を向上させる。Further, the inspection method of the main circuit switchgear of the present invention includes a step of inserting a partition member made of a conductive material and a step of grounding the partition member. At the time of inspection work or the like, a conductive separating member is inserted, and the separating member is grounded to further improve the work safety.
【００１７】[0017]
【発明の実施の形態】実施の形態１．図１はこの発明の
実施の一形態を示す主回路開閉装置の断面図である。図
２は図１の切断線ＩＩ−ＩＩにおける断面図である。図
１において、１は電流を遮断する遮断部であり、次のよ
うに構成されている。２はエポキシ樹脂などで作られた
絶縁筒、３は絶縁筒２の一端に固定された円筒容器状の
遮断部固定側導体、４は絶縁筒２を間にして遮断部固定
側導体３と対向配置されるとともに絶縁筒２の他端に固
定された円筒容器状の遮断部可動側導体である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a sectional view of a main circuit switching device showing an embodiment of the present invention. FIG. 2 is a sectional view taken along section line II-II in FIG. In FIG. 1, reference numeral 1 denotes a cutoff unit that cuts off current, and is configured as follows. Reference numeral 2 denotes an insulating cylinder made of an epoxy resin or the like, 3 denotes a cylindrical-section-shaped fixed-side conductor fixed to one end of the insulating cylinder 2, and 4 faces the fixed-portion-side conductor 3 with the insulating cylinder 2 interposed therebetween. It is a cylindrical container-shaped blocking portion movable-side conductor that is arranged and fixed to the other end of the insulating tube 2.
【００１８】５は遮断部固定側導体３に固定された固定
接接触子、６は可動接触子であり、図において左右方向
へ移動可能に遮断部可動側導体４に取り付けられ、固定
接触子５と接離するようになっている。これら絶縁筒
２、遮断部固定側導体３、遮断部可動側導体４、固定接
触子５及び可動接触子６で遮断部１を構成している。な
お、遮断部１の固定接触子５及び可動接触子６が収容さ
れている部分にはＳＦ６ガスが充填されている。Reference numeral 5 denotes a fixed contact contact fixed to the cut-off portion fixed-side conductor 3, and 6 denotes a movable contact, which is attached to the cut-off portion movable-side conductor 4 so as to be movable in the left-right direction in the figure. And come and go. The insulating section 1 is constituted by the insulating tube 2, the fixed portion conductor 3 on the cutoff portion, the movable side conductor 4 on the cutoff portion, the fixed contact 5 and the movable contact 6. Note that the portion of the blocking unit 1 in which the fixed contact 5 and the movable contact 6 are accommodated is filled with SF6 gas.
【００１９】８は遮断部可動側導体４への電圧の印加を
切るための断路部であり、次のように構成されている。
９は円筒状の断路部固定側導体で、遮断部可動側導体４
と電気的及び機械的に一体的に形成された一体化固定導
体７を構成しており、遮断部可動側導体４との間には隔
壁１０が設けられている。Reference numeral 8 denotes a disconnecting portion for cutting off the application of a voltage to the cut-off portion movable side conductor 4, and is configured as follows.
Reference numeral 9 denotes a cylindrical disconnecting portion fixed-side conductor, and a breaking portion movable-side conductor 4.
And an integral fixed conductor 7 integrally formed electrically and mechanically, and a partition wall 10 is provided between the integrated fixed conductor 7 and the breaking portion movable side conductor 4.
【００２０】１１は断路部固定側導体９と対向して設置
された円筒状の断路部可動側導体であり、１２は円筒状
の可動導体である。可動導体１２は、図において左右方
向へ摺動可能に断路部可動側導体１１に取り付けられて
いる。外周部が断路部可動側導体１１の内周部と摺動す
る可動導体１２は、その外周部で断路部固定側導体９の
内周部と接離するようになっている。これら断路部固定
側導体９、断路部可動側導体１１及び可動導体１２で断
路部８を構成している。Reference numeral 11 denotes a cylindrical disconnecting portion movable side conductor which is installed to face the disconnecting portion fixed side conductor 9, and 12 denotes a cylindrical movable conductor. The movable conductor 12 is attached to the disconnecting portion movable side conductor 11 so as to be slidable in the left-right direction in the figure. The movable conductor 12 whose outer peripheral portion slides on the inner peripheral portion of the disconnecting portion movable side conductor 11 is adapted to come into contact with and separate from the inner peripheral portion of the disconnecting portion fixed side conductor 9 on its outer peripheral portion. The disconnecting portion 8 is constituted by the disconnecting portion fixed side conductor 9, the disconnecting portion movable side conductor 11, and the movable conductor 12.
【００２１】１４は大地電位の第一の接地導体で、発電
プラントの運転時は、図における下方へ降ろしておき、
点検などの時は上げてその先端を遮断部固定側導体３に
接触させて接地し、安全を確保する。１５は同様にして
断路部可動側導体１１を接地する、大地電位の第二の接
地導体である。Reference numeral 14 denotes a first ground conductor having a ground potential, which is lowered in the figure during operation of the power plant,
At the time of inspection, etc., the tip is raised, and the tip is brought into contact with the conductor 3 on the fixed side of the cut-off portion to be grounded, thereby ensuring safety. Reference numeral 15 denotes a ground potential second grounding conductor which similarly grounds the disconnecting portion movable side conductor 11.
【００２２】１６は支持架台、１７、１８は遮断部１と
一体化固定導体７とが絶縁筒２にて連結され一体になっ
たものを支持架台１６上に支持する中空状の第１と第２
の支持絶縁物、１９は断路部可動側導体１１を支持架台
１６上に支持する第３の支持絶縁物である。遮断部１と
断路部８は支持架台１６上で、水平方向に遮断部固定側
導体３、遮断部可動側導体４、断路部固定側導体９、断
路部可動側導体１１の順に配置され、これらで主回路開
閉部１３が構成されており、全体が後述する収容箱３２
の収容部２０に収容されている。Reference numeral 16 denotes a support base, and reference numerals 17 and 18 denote hollow first and first hollow supports for supporting the integrated unit in which the blocking portion 1 and the integral fixed conductor 7 are connected by the insulating cylinder 2 on the support base 16. 2
Reference numeral 19 denotes a third support insulator for supporting the disconnecting portion movable-side conductor 11 on the support base 16. The interrupting section 1 and the disconnecting section 8 are horizontally arranged on the support base 16 in the order of the interrupting section fixed-side conductor 3, the interrupting section movable-side conductor 4, the disconnecting section fixed-side conductor 9, and the disconnecting section movable-side conductor 11. The main circuit opening / closing section 13 is constituted by a housing box 32 described later.
Are accommodated in the accommodation section 20.
【００２３】２１は遮断部１を操作する遮断部操作装置
で、第１の支持絶縁物１７の中空部を通って遮断部可動
側導体４中のレバー３０につながった第１の絶縁操作ロ
ッド２２を有し、第１の絶縁操作ロッド２２を上下方向
へ動かすことにより可動接触子６を水平方向に駆動して
固定接触子５と接離させる。２３は断路部８を操作する
断路部操作装置で、断路部可動側導体１１中のレバー３
１につながった第２の絶縁操作ロッド２４を有し、第２
の絶縁操作ロッド２４を上下方向へ動かすことにより可
動導体１２を水平方向に駆動して断路部固定側導体９と
接離させる。２５、２６は第１と第２の接地部操作装置
で、それぞれ第１と第２の接地導体１４，１５を上下方
向へ駆動操作する。Reference numeral 21 denotes a breaking section operating device for operating the breaking section 1, and a first insulating operating rod 22 connected to a lever 30 in the breaking section movable side conductor 4 through a hollow portion of the first supporting insulator 17. By moving the first insulating operation rod 22 in the vertical direction, the movable contact 6 is driven in the horizontal direction to come into contact with and separate from the fixed contact 5. Reference numeral 23 denotes a disconnection section operating device for operating the disconnection section 8, and the lever 3 in the disconnection section movable side conductor 11 is provided.
A second insulated operating rod 24 connected to
By moving the insulating operation rod 24 in the vertical direction, the movable conductor 12 is driven in the horizontal direction so as to come into contact with and separate from the disconnecting portion fixed side conductor 9. Reference numerals 25 and 26 denote first and second grounding section operation devices, which respectively drive and operate the first and second grounding conductors 14 and 15 in the vertical direction.
【００２４】収容箱３２は、ベース１６と一体に形成さ
れた枠に鋼鈑を取り付け覆ったもので、上記主回路開閉
部１３を収容する閉鎖盤の形態をなしている。なお、収
容箱３２の上部には点検蓋２７、２８が設けられてお
り、点検蓋２７あるいは点検蓋２８を取り除くことによ
り断路部８あるいは遮断部１の保守点検が可能である。
また、遮断部固定側導体９の外周部に収容箱３２の収容
部２０を左右に区切り、遮断部１を収容する遮断部収容
部２０ａと断路部収容部２０ｂとを形成するように遮蔽
板３６が配置されている。区切り部材である遮蔽板３６
は、図２に示すように収容箱３２の幅方向内寸法Ｗより
わずかに小さい寸法とされ、支持架台１６上に乗ってお
り、収容箱３２及び支持架台１６と断路部固定側導体９
（一体化固定導体７）との間に殆ど隙間が生じないよう
にしている。The storage box 32 is formed by covering a frame formed integrally with the base 16 with a steel plate, and is in the form of a closed plate that houses the main circuit opening / closing section 13. In addition, inspection lids 27 and 28 are provided on the upper part of the housing box 32, and maintenance inspection of the disconnecting section 8 or the blocking section 1 is possible by removing the inspection lid 27 or the inspection lid 28.
Further, a shielding plate 36 is provided on the outer peripheral portion of the blocking portion fixed side conductor 9 so as to divide the housing portion 20 of the housing box 32 into right and left portions and form a blocking portion housing portion 20a for housing the blocking portion 1 and a disconnection portion housing portion 20b. Is arranged. Shielding plate 36 serving as a separating member
2 is slightly smaller than the inner width W of the storage box 32 as shown in FIG. 2, is mounted on the support base 16, and is connected to the storage box 32, the support base 16, and the disconnection portion fixed side conductor 9.
(Integral fixed conductor 7) so that there is almost no gap.
【００２５】以上のように構成された主回路開閉装置は
図１２の単線結線図と次のように対応している。遮断部
１と遮断部操作装置２１で主回路遮断部Ｂを構成すると
ともに、断路部８と断路部操作装置２３で主回路断路部
Ｃを、第１の接地導体１４と第１の接地部操作装置２５
で遮断部側接地装置Ｄを、第２の接地導体１５と第２の
接地部操作装置２６で断路部側接地装置Ｅを構成し、以
上これらを一体化して主回路開閉装置Ａを構成してい
る。装置の外形は、図１２に示されたものとほぼ同じで
あり、長さＬが３ｍ、幅（奥行き）（ほぼＷに近い）が
１ｍ、高さＨが１．３ｍ程度である。The main circuit switchgear configured as described above corresponds to the single-line diagram in FIG. 12 as follows. The main circuit interrupting section B is constituted by the interrupting section 1 and the interrupting section operating device 21, and the main circuit disconnecting section C is interrupted by the disconnecting section 8 and the disconnecting section operating device 23. Device 25
And the second grounding conductor 15 and the second grounding section operating device 26 to form the disconnecting section side grounding apparatus E, and these are integrated to form the main circuit switchgear A. I have. The outer shape of the device is almost the same as that shown in FIG. 12, with a length L of 3 m, a width (depth) (approximately W) of about 1 m, and a height H of about 1.3 m.
【００２６】主回路開閉装置は以上のように構成されて
いるので、保守点検時に断路部可動側導体１１が充電さ
れていても、断路部８の可動導体１２が断路部固定側導
体９と離隔した状態であれば、遮蔽板３６が配置されて
いるので遮断部収容部２０ａには電気的充電露出部がな
く、点検蓋２８を開けて人が遮断部１側すなわち遮断部
収容部２０に入って安全に作業することができる。な
お、外した点検蓋２８は、遮断部１での作業に支障を来
さない範囲であればどこに置いてもよく、必要に応じて
点検蓋２７の上部に置くことも可能である。なお、点検
時には念のため一体化固定導体７を接地しておく。Since the main circuit switchgear is constructed as described above, the movable conductor 12 of the disconnecting portion 8 is separated from the disconnecting portion fixed side conductor 9 even if the disconnecting portion movable side conductor 11 is charged during maintenance and inspection. In this state, since the shielding plate 36 is disposed, there is no electrical charging exposure portion in the blocking portion housing portion 20a, and the inspection cover 28 is opened and a person enters the blocking portion 1 side, that is, the blocking portion housing portion 20. And can work safely. The removed inspection lid 28 may be placed anywhere as long as it does not interfere with the operation of the blocking unit 1, and may be placed on the inspection lid 27 if necessary. At the time of inspection, the integrated fixed conductor 7 is grounded just in case.
【００２７】通常の運転時には遮蔽板３６に断路部固定
側導体９側から収容箱３２の外被側に向かって電圧がか
かるため、絶縁性能の確保も必要である。特に、絶縁物
の表面に塵埃等が付着すると絶縁性能が低下する。以上
の説明では、遮蔽板３６として平板を用いたが、沿面絶
縁性能を確保するためには遮蔽板３６の一部を断路器固
定側導体９側から同心円の波板状にして沿面距離を増加
させれば、絶縁信頼性の向上に効果がある。During normal operation, a voltage is applied to the shielding plate 36 from the disconnecting portion fixed side conductor 9 side toward the outer cover side of the housing box 32, so that it is necessary to ensure insulation performance. In particular, if dust or the like adheres to the surface of the insulator, the insulation performance decreases. In the above description, a flat plate is used as the shielding plate 36. However, in order to ensure the creeping insulation performance, a part of the shielding plate 36 is formed in a concentric corrugated shape from the disconnector fixed side conductor 9 to increase the creepage distance. This has the effect of improving insulation reliability.
【００２８】実施の形態２．図３は、この発明の他の実
施の形態を示す遮蔽板を挿入した状態の主回路開閉装置
の横断面図である。図４は遮蔽板の他の形状例を示す横
断面図である。なお、これらの図において、図１、図２
と同様の部分については同一符号を付して説明を省略す
る。遮蔽板４０はアルミニウムの薄板であり、幅が収容
箱３２の内寸法とほぼ同じであり、中央部に断路部固定
側導体９の形状に合わせた切り欠き部４０ａが設けられ
ている。遮断部１及び断路部８が開離状態で点検蓋２８
を外し、断路部固定側導体９の上部から遮蔽板４０を収
容箱３２の側板内面に設けられたガイド板４１の溝に沿
って挿入する。遮蔽板４０の切り欠き部４０ａと断路部
固定側導体９とは上部では接触するので大きな隙間は生
じないが、下部では若干の開口部が生じる。しかし、第
一の支持絶縁物１７により開口部の大部分が塞がれてい
るため、安全に作業することができる。Embodiment 2 FIG. 3 is a cross-sectional view of a main circuit opening / closing device according to another embodiment of the present invention with a shielding plate inserted. FIG. 4 is a cross-sectional view showing another example of the shape of the shielding plate. In these figures, FIGS. 1 and 2
The same parts as those described above are denoted by the same reference numerals and description thereof will be omitted. The shielding plate 40 is a thin aluminum plate, has a width substantially equal to the inner size of the storage box 32, and is provided with a cutout portion 40 a at the center corresponding to the shape of the disconnection portion fixed side conductor 9. Inspection cover 28 with blocking unit 1 and disconnecting unit 8 open
Is removed, and the shielding plate 40 is inserted from above the disconnection portion fixed side conductor 9 along the groove of the guide plate 41 provided on the inner surface of the side plate of the storage box 32. Since the cutout portion 40a of the shield plate 40 and the disconnection portion fixed side conductor 9 are in contact with each other at the upper portion, a large gap is not generated, but a small opening is formed at the lower portion. However, since most of the opening is closed by the first support insulator 17, safe operation can be performed.
【００２９】また、遮蔽板４０が金属製であるので、遮
蔽板４０を電気的に接地すれば、安全性はさらに増すこ
とになる。また、図４は遮蔽板５０を挿入方向、すなわ
ち鉛直方向に沿って中心で２分割して第一、第二遮蔽板
５１，５２で構成したものであり、これによって遮蔽板
一板当たりの重量がさらに軽くなり、挿脱時の扱いが一
層容易になるという効果がある。Since the shielding plate 40 is made of metal, if the shielding plate 40 is electrically grounded, the safety will be further increased. FIG. 4 shows a configuration in which the shielding plate 50 is divided into two parts at the center in the insertion direction, that is, the vertical direction, to constitute first and second shielding plates 51 and 52, whereby the weight per shielding plate is obtained. Is further reduced, and the handling at the time of insertion / removal is further facilitated.
【００３０】実施の形態３．図５は、さらにこの発明の
他の実施の形態を示す遮蔽板を装着した状態の主回路開
閉装置の横断面図、図６は遮蔽板の挿入工程を説明する
ための説明図である。遮蔽板６０は第１の遮蔽板６１と
第二の遮蔽板６２とから構成されており、第一の遮蔽板
６１は幅が収容箱３２の内寸法とほぼ同一であり、中央
部が断路部固定側導体９の形状に合わせた切り欠き部６
１ａが設けられており、支持架台１６に乗っている。第
二の遮蔽板６２は断路器固定側導体９の下部に設けられ
ており、その上部が断路部固定側導体９の形状に合わせ
ておのおの４分円状に切り欠かれている。第二の遮蔽板
６２は上部及び下部を第一の遮蔽板６１に固定された案
内板６３、６４の溝と係合され、左右方向にスライド可
能に摺動案内されて取り付けられている。Embodiment 3 FIG. 5 is a cross-sectional view of a main circuit opening / closing device according to another embodiment of the present invention in a state where a shielding plate is mounted, and FIG. 6 is an explanatory diagram for explaining a step of inserting the shielding plate. The shielding plate 60 includes a first shielding plate 61 and a second shielding plate 62. The width of the first shielding plate 61 is substantially the same as the inner size of the storage box 32, and the center is a disconnection portion. Notch 6 according to shape of fixed side conductor 9
1 a is provided, and is mounted on a support base 16. The second shielding plate 62 is provided at a lower portion of the disconnector fixed side conductor 9, and an upper portion thereof is cut out in a quadrant in accordance with the shape of the disconnection portion fixed side conductor 9. The second shielding plate 62 has upper and lower portions engaged with grooves of guide plates 63 and 64 fixed to the first shielding plate 61, and is slidably guided in the left-right direction and mounted.
【００３１】遮断部１の点検に際し、遮蔽板６０の装着
は以下のようにして行う。遮断部１及び断路部８が開離
状態で点検蓋２８（図１）を外し、断路部固定側導体９
の上部から第一の遮蔽板６１を挿入する。図６は遮蔽板
６１が挿入された状態であり、第二の遮蔽板６２は遮断
部１側の面に取り付けられており、第一の遮蔽板６１と
一部重なった状態にある。この時遮蔽板６１の切り欠き
部６１ａと断路部固定側導体９の上部は接触して隙間は
ほとんど生じないが、下部では開口部が生じている。次
に、第二の遮蔽板６２を内側（図の左及び右）に向かっ
てスライドさせて下部の開口部を閉じる。これにより遮
断部１側からは電気的充電部である断路部８の可動導体
１２や断路部可動側導体１１に触れるおそれがなく、人
が遮断部収容部２０ａに入って安全に作業することがで
きることになる。At the time of inspection of the blocking unit 1, the mounting of the shielding plate 60 is performed as follows. The inspection cover 28 (FIG. 1) is removed in a state where the blocking unit 1 and the disconnecting unit 8 are separated, and the disconnecting unit fixed-side conductor 9 is removed.
The first shielding plate 61 is inserted from above. FIG. 6 shows a state in which the shielding plate 61 is inserted. The second shielding plate 62 is attached to the surface on the side of the shielding unit 1 and partially overlaps the first shielding plate 61. At this time, the notch 61a of the shielding plate 61 and the upper portion of the disconnecting portion fixed side conductor 9 are in contact with each other, so that almost no gap is formed, but an opening is formed in the lower portion. Next, the second shielding plate 62 is slid inward (left and right in the figure) to close the lower opening. Thus, there is no possibility that the breaking section 1 will touch the movable conductor 12 of the disconnecting section 8 or the disconnecting section movable side conductor 11, which is an electrical charging section, and a person can enter the blocking section accommodating section 20a and work safely. You can do it.
【００３２】なお、遮蔽板６０を電気絶縁板で製作し
て、常時装着した状態にしておき、点検の都度挿入する
手間を省くこともできる。The shielding plate 60 can be made of an electrically insulating plate and always mounted, so that the trouble of inserting the shielding plate every time the inspection is performed can be omitted.
【００３３】実施の形態４．図７は、さらにこの発明の
他の形態を示す主回路開閉装置の横断面図である。図７
において、遮蔽板７０は二つに分割された第一の切り欠
き板７１と第二の切り欠き板７２を有する。第一、第二
の切り欠き板７１、７２は断面円形の断路部固定側導体
９を中心にして線対称の形状をしており、それぞれに設
けられた切り欠き部７１ａ、７２ａが断路部固定側導体
９の外周と若干の隙間をおいて嵌合している。Embodiment 4 FIG. FIG. 7 is a cross-sectional view of a main circuit switchgear showing still another embodiment of the present invention. FIG.
, The shielding plate 70 has a first cutout plate 71 and a second cutout plate 72 which are divided into two. The first and second cutout plates 71 and 72 have a line-symmetrical shape around the disconnecting portion fixing side conductor 9 having a circular cross section, and the cutout portions 71a and 72a provided in the respective cutout portions 71 and 72 are fixed to the disconnecting portion. The outer conductor 9 is fitted to the outer periphery of the side conductor 9 with a slight gap.
【００３４】遮断部１の点検時に、第一の切り欠き板７
１は図７における左方から右方へ、第二の切り欠き板７
２は右方から左方へ図示しないガイドレールに案内され
て収容箱３２内に挿入され、断路部固定側導体９の外周
に嵌合する。At the time of inspection of the cut-off section 1, the first notch plate 7
1 is a second notch plate 7 from the left to the right in FIG.
2 is guided from the right to the left by a guide rail (not shown), inserted into the housing box 32, and fitted to the outer periphery of the disconnecting portion fixed side conductor 9.
【００３５】実施の形態５．図８は、さらにこの発明の
他の実施の形態を示す主回路開閉装置の断面図である。
遮蔽板４０は図に示すように装着される。収容箱３２に
は、いずれも鋼板製の第一の点検蓋４５、第二の点検蓋
４６が設けられている。第一の点検蓋４５の図の右側端
部は下方へ段違い曲げ加工がされており、第二の点検蓋
４６は平板状であり、その左端部が重ねられている。Embodiment 5 FIG. FIG. 8 is a cross-sectional view of a main circuit switchgear showing still another embodiment of the present invention.
The shielding plate 40 is mounted as shown in the figure. The accommodation box 32 is provided with a first inspection lid 45 and a second inspection lid 46 both made of steel plates. The right end of the first inspection lid 45 in the figure is bent stepwise downward, and the second inspection lid 46 has a flat plate shape, and its left end is overlapped.
【００３６】遮蔽板４０（図３参照）の装着は以下のよ
うにして行う。遮断部１及び断路部８が開放状態で第二
の点検蓋４６を、遮蔽板４０が挿入可能なように図の右
方に少しずらす。この場合、第一の点検蓋４５と第二の
点検蓋４６との間に形成される開口部は遮蔽板４０の板
厚程度でよいことになる。その状態でその開口部の上方
から遮蔽板４０を挿入する。挿入が完了すれば遮断部収
容部２０には電気的充電露出部がなく、第二の点検蓋４
６を取り除き、人が遮断部１側に入って安全に作業する
ことができる。これによって、遮蔽板４０を挿入すると
きに上部の点検蓋の開口部の大きさを最小にすることが
でき、遮蔽板４０の挿入作業をより安全に行うことがで
きる。The mounting of the shielding plate 40 (see FIG. 3) is performed as follows. With the blocking unit 1 and the disconnecting unit 8 open, the second inspection lid 46 is slightly shifted to the right in the drawing so that the shielding plate 40 can be inserted. In this case, the opening formed between the first inspection lid 45 and the second inspection lid 46 may be about the thickness of the shielding plate 40. In this state, the shielding plate 40 is inserted from above the opening. When the insertion is completed, there is no electric charging exposure portion in the cut-off portion accommodating portion 20, and the second inspection lid 4
6 can be removed, and a person can enter the blocking unit 1 side and work safely. Thus, when the shield plate 40 is inserted, the size of the opening of the upper inspection lid can be minimized, and the work of inserting the shield plate 40 can be performed more safely.
【００３７】実施の形態６．図９、図１０はさらにこの
発明の他の実施の形態を示すもので、図９は主回路開閉
装置の断面図、図１０は図９の切断線Ｘ−Ｘにおける断
面図である。図において、８０は遮蔽板であり、孔明板
８１と円環板８２とで構成されている。孔明板８１、円
環板８２はともに絶縁材で製作されており、孔明板８１
は図１０のように四角形の板で、断路部固定側導体９の
間に充分な絶縁距離を確保するよう、その中央部に断路
部固定側導体９の外径よりも所定寸法ｘ大きい円形の孔
を形成する孔形成部８１ａ（図１０）が設けられてい
る。Embodiment 6 FIG. 9 and 10 show still another embodiment of the present invention. FIG. 9 is a cross-sectional view of a main circuit switching device, and FIG. 10 is a cross-sectional view taken along the line XX of FIG. In the figure, reference numeral 80 denotes a shielding plate, which is constituted by a perforated plate 81 and an annular plate 82. The perforated plate 81 and the annular plate 82 are both made of an insulating material.
Is a rectangular plate as shown in FIG. 10 and has a circular shape having a predetermined size x larger than the outer diameter of the disconnection portion fixed side conductor 9 at the center thereof so as to secure a sufficient insulation distance between the disconnection portion fixed side conductors 9. A hole forming portion 81a (FIG. 10) for forming a hole is provided.
【００３８】円環板８２は、図９のように孔明板８１と
の間に断路部固定側導体９の軸方向に所定の絶縁距離ｙ
を確保するようにして、断路部固定側導体９の外周部に
嵌合されている。円環板８２の外径は図９、図１０のよ
うに孔明板８１に形成された孔の径よりも大きく、断路
部固定側導体９の軸方向から見て寸法ｚ（図１０）だけ
重なるようにしている。As shown in FIG. 9, the annular plate 82 is provided with a predetermined insulation distance y in the axial direction of the disconnection portion fixed side conductor 9 between itself and the perforated plate 81.
Is secured to the outer peripheral portion of the disconnecting portion fixed side conductor 9. The outer diameter of the annular plate 82 is larger than the diameter of the hole formed in the perforated plate 81 as shown in FIGS. 9 and 10, and overlaps by the dimension z (FIG. 10) when viewed from the axial direction of the disconnecting portion fixed side conductor 9. Like that.
【００３９】このように、充分な絶縁距離ｘ、ｙ及び重
なり寸法ｚをとり、常時の絶縁の信頼性及び遮断部１の
点検時の安全性を確保している。As described above, sufficient insulation distances x and y and overlap dimension z are taken to ensure the reliability of the insulation at all times and the safety at the time of inspection of the cutoff unit 1.
【００４０】なお、上記各実施の形態においては、断路
部可動側導体１１、断路部固定側導体９、遮断部可動側
導体４、遮断部固定側導体３が水平方向に直線状に配設
されているものを示したが、鉛直方向に直線状に配置さ
れたものや、直線状ではなくＬ状等に配設したものであ
っても同様の効果を奏する。In each of the above embodiments, the disconnectable portion movable side conductor 11, the disconnected portion fixed side conductor 9, the cutoff portion movable side conductor 4, and the cutoff portion fixed side conductor 3 are arranged linearly in the horizontal direction. However, the same effects can be obtained even if they are arranged in a straight line in the vertical direction, or if they are arranged in an L shape instead of a straight line.
【００４１】[0041]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載するような効果を奏する。本発
明の主回路開閉装置は、互いに対向して配設され断路部
可動導体を介して接離可能にされた第一と第二の断路部
固定導体を有する断路部及び第二の断路部固定導体と一
体に形成されて一体化固定導体を構成する第一の遮断部
固定導体とこの第一の遮断部固定導体に対向して配置さ
れ第一の遮断部固定導体と遮断部可動接触子を介して接
離可能にされた第二の遮断部固定導体を有する遮断部を
設けた主回路開閉部、収容部に主回路開閉部を収容する
収容箱及びこの収容箱内の一体化固定導体の外周側に設
けられ収容部を断路部を収容する断路部収容部と遮断部
を収容する遮断部収容部とに区切る区切り部材を備え、
発電プラントに用いられ主発電機が主回路開閉部を介し
て主変圧器に接続されるものであるので、第二の断路部
固定導体と第一の遮断部固定導体とを一体に形成して一
体化固定導体を構成することにより装置がコンパクトに
なり、かつ遮断部収容部は区切り部材により断路部収容
部と区切られており、断路部が充電されていても安全に
点検できる。また、断路部を充電したままでもよいの
で、遮断部の点検のために断路部につながる電源、例え
ば所内電源を停止させなくてよく、この所内電源を保守
点検用の動力として利用することも可能である。従っ
て、発電プラントに用いられ主発電機が主回路開閉部を
介して主変圧器に接続されるものであって、別に保守点
検用動力設備を設けなくてよく、保守点検を安全、容易
かつ安価に行うことが可能な主回路開閉装置を得ること
ができる。 Since the present invention is constructed as described above, it has the following effects. Main circuit switchgear of the present invention, the disconnector portion are disposed opposite to each other
One and the first and second disconnecting switch and the second disconnector stationary conductor having a disconnector fixed conductors enables contact and separation through the movable conductor
First cut-off portion formed on the body to form an integral fixed conductor
The fixed conductor and the first cut-off portion fixed conductor are disposed so as to face each other.
Connected to the first fixed conductor of the breaking part via the movable contact of the breaking part.
A main circuit opening / closing section provided with a breaking section having a detachable second breaking section fixed conductor, and the main circuit opening / closing section is housed in a housing section.
A partition member provided on the outer peripheral side of the storage box and the integrated fixed conductor in the storage box to partition the storage section into a disconnection section storage section that stores the disconnection section and a blocking section storage section that stores the blocking section ,
The main generator used in the power plant is connected via the main circuit switch.
The second disconnecting part because it is connected to the main transformer.
The fixed conductor and the first cut-off section fixed conductor are integrally formed
The device can be made compact by forming a fixed conductor
In addition, the cut-off portion accommodating portion is separated from the disconnection portion accommodating portion by the separating member, so that even if the disconnection portion is charged, it can be safely inspected. In addition, since the disconnecting section may be left charged, the power supply connected to the disconnecting section for inspection of the interrupting section, for example, the internal power supply does not need to be stopped, and the internal power supply can be used as power for maintenance and inspection. It is. Therefore, the main generator used in the power generation plant
To obtain a main circuit switchgear that is connected to the main transformer via a power source and does not require a separate maintenance and inspection power facility, and can perform maintenance and inspection safely, easily, and at low cost.
Can be.
【００４２】そして、第一及び第二の断路部固定導体並
びに第一及び第二の遮断部固定導体を所定方向に直線状
に配設したものであるので、各固定導体を直線状に配設
することにより装置がさらにコンパクトになる。Since the first and second disconnection portion fixed conductors and the first and second cutoff portion fixed conductors are linearly arranged in a predetermined direction , each fixed conductor is linearly arranged.
This makes the device more compact.
【００４３】さらに、区切り部材を所定方向と交差する
方向から挿脱しうるようにしたものであるので、遮断部
を点検するときに区切り部材を挿入して断路部と区切っ
て安全に作業ができ、また点検作業の終了後、区切り部
材を取出せば元通りに絶縁距離を確保できる。Furthermore, since the separating member can be inserted and removed from a direction intersecting with the predetermined direction, the separating member can be inserted and separated from the disconnection part when inspecting the shut-off part, so that work can be performed safely. Also, after the inspection work is completed, if the separating member is removed, the insulation distance can be secured as before.
【００４４】また、所定方向が水平方向となるように配
設するとともに、区切り部材に切欠き部を設け、区切り
部材を切欠き部が一体化固定導体に嵌合するようにして
鉛直方向上方から挿脱しうるようにしたものであるの
で、ホイスト等の吊上げ手段により容易に鉛直方向から
の挿脱を行うことができ、作業性が向上する。Further, the partition member is disposed so that the predetermined direction is horizontal, and a notch is provided in the partition member, and the partition member is inserted from above in the vertical direction so that the notch fits into the integrated fixed conductor. Since it can be inserted and removed, it can be easily inserted and removed from the vertical direction by a lifting means such as a hoist, and the workability is improved.
【００４５】そして、所定方向が水平方向となるように
配設するとともに、区切り部材をそれぞれ切欠き部を設
けた第一及び第二の切欠き部付区切り部材にて構成し、
第一の切欠き部付区切り部材を水平方向の一方側から挿
入して一体化固定導体にその切欠き部を嵌合し第二の切
欠き部付区切り部材を水平方向の他方の側から挿入して
一体化固定導体にその切欠き部を嵌合したものであるの
で、一体化固定導体に水平方向から第一及び第二の区切
り部材を嵌合するようにすることにより、区切り部材を
容易に設けることができるとともに一体化固定導体の周
囲においてより完全に断路部と遮断部とを区切ることが
できる。[0045] Then, while being arranged so that the predetermined direction is the horizontal direction, the separating member is constituted by first and second notched separating members each having a notch.
Insert the first notch separating member from one side in the horizontal direction, fit the notch into the integrated fixed conductor, and insert the second notching separator from the other side in the horizontal direction. Since the notch portion is fitted to the integrated fixed conductor and the first and second partition members are fitted to the integrated fixed conductor from the horizontal direction, the partition member can be easily formed. And the disconnection part and the interruption part can be more completely separated around the integrated fixed conductor.
【００４６】さらに、本発明の主回路開閉装置の点検方
法は、互いに対向して配設され断路部可動導体を介して
接離可能にされた第一と第二の断路部固定導体を有する
断路部及び互いに対向して配設され遮断部可動接触子を
介して接離可能にされた第一と第二の遮断部固定導体を
有し第一の遮断部固定導体が第二の断路部固定導体に電
気的に直列に接続された遮断部を設けた主回路開閉部並
びに収容部に主回路開閉部を収容する収容箱を備え、発
電プラントに用いられ主発電機が主回路開閉部を介して
主変圧器に接続されるものである主回路開閉装置の点検
に際し、断路部を開放してから収容箱内に区切り部材を
挿入し収容部を断路部を収容する断路部収容部と遮断部
を収容する遮断部収容部とに区切ってから遮断部の点検
を行うようにしたものであるので、保守点検等の作業を
安全、容易かつ安価に行うことができる。Further, the inspection method of the main circuit switchgear according to the present invention is directed to a disconnection having first and second disconnection section fixed conductors which are arranged to be opposed to each other and can be separated from each other via a disconnection section movable conductor. And a first and a second fixing part fixed conductor which are disposed opposite to each other and which can be connected and separated via a separating part movable contact, and the first breaking part fixing conductor fixes the second disconnecting part. A main circuit opening / closing section provided with a breaking section electrically connected in series to the conductor, and a housing box for housing the main circuit opening / closing section in the housing section ;
The main generator used in the power plant
When inspecting the main circuit switchgear that is connected to the main transformer, open the disconnection section, insert the partition member into the storage box , and then connect the disconnection section storage section and the cutoff section that store the disconnection section to the storage section. Since the inspection of the blocking section is performed after the partitioning section is separated from the housing section, the work such as maintenance and inspection can be performed safely, easily, and at low cost.
【００４７】また、本発明の主回路開閉装置の点検方法
は、導電材料製の区切り部材を挿入する工程と、区切り
部材を接地する工程と、を設けたものであるので、点検
作業時等に導電性の区切り部材が挿入されており、かつ
区切り部材が接地されていれば一層作業の安全性を確保
できる。The inspection method of the main circuit switchgear according to the present invention includes a step of inserting a partition member made of a conductive material and a step of grounding the partition member. If the conductive separating member is inserted and the separating member is grounded, the work safety can be further secured.
【図１】 この発明の実施の一形態を示す主回路開閉装
置の断面図である。FIG. 1 is a cross-sectional view of a main circuit switching device showing an embodiment of the present invention.
【図２】 図１の切断線ＩＩ−ＩＩにおける断面図であ
る。FIG. 2 is a sectional view taken along section line II-II in FIG.
【図３】 この発明の他の実施の形態を示す遮蔽板を挿
入した状態の主回路開閉装置の横断面図である。FIG. 3 is a cross-sectional view of a main circuit opening / closing device according to another embodiment of the present invention with a shielding plate inserted therein.
【図４】 図３の主回路開閉装置における遮蔽板の他の
形状例を示す横断面図である。FIG. 4 is a cross-sectional view showing another example of the shape of the shielding plate in the main circuit switching device of FIG. 3;
【図５】 さらに、この発明の他の実施の形態を示す遮
蔽板を挿入した状態の主回路開閉装置の横断面図であ
る。FIG. 5 is a cross-sectional view of a main circuit opening / closing device according to another embodiment of the present invention with a shielding plate inserted therein.
【図６】 図５の遮蔽板の挿入工程を説明するための説
明図である。FIG. 6 is an explanatory diagram for explaining a step of inserting the shielding plate of FIG. 5;
【図７】 さらに、この発明の他の実施の形態を示す主
回路開閉装置の横断面図である。FIG. 7 is a cross-sectional view of a main circuit switching device showing another embodiment of the present invention.
【図８】 さらに、この発明の他の実施の形態を示す遮
蔽板を装着した状態の主回路開閉装置の断面図である。FIG. 8 is a cross-sectional view of a main circuit opening / closing device according to another embodiment of the present invention, in which a shielding plate is mounted.
【図９】 さらに、この発明の他の実施の形態を示す遮
蔽板を挿入した状態の主回路開閉装置の断面図である。FIG. 9 is a cross-sectional view of a main circuit switching device in a state where a shielding plate according to another embodiment of the present invention is inserted.
【図１０】 図９の切断線Ｘ−Ｘにおける横断面図であ
る。FIG. 10 is a transverse sectional view taken along section line XX of FIG. 9;
【図１１】 発電プラントの高圧同期方式の場合の単線
結線図である。FIG. 11 is a single-line diagram in the case of a high-voltage synchronous system of a power plant.
【図１２】 発電プラントの低圧同期方式の場合の単線
結線図である。FIG. 12 is a single-line diagram in the case of a low-pressure synchronous system of a power plant.
【図１３】 主回路開閉装置の単線結線図である。FIG. 13 is a single-line diagram of the main circuit switching device.
【図１４】 従来の主回路開閉装置の断面図である。FIG. 14 is a sectional view of a conventional main circuit switching device.
１ 遮断部、３ 遮断部固定側導体、４ 遮断部可動側
導体、５ 固定接触子、６ 可動接触子、７ 一体化固
定導体、８ 断路部、９ 断路部固定側導体、１１ 断
路部可動側導体、１２ 可動導体、１３ 主回路開閉
部、２０ 収容部、２０ａ 遮断部収容部、２０ｂ 断
路部収容部、３２ 収容箱、３６，４０，５０，６０，
７０，８０ 遮蔽板。DESCRIPTION OF SYMBOLS 1 Interruption part, 3 interruption part fixed side conductor, 4 interruption part movable side conductor, 5 fixed contact, 6 movable contact, 7 integrated fixed conductor, 8 disconnection part, 9 disconnection part fixed side conductor, 11 disconnection part movable side Conductor, 12 movable conductor, 13 main circuit opening / closing section, 20 accommodation section, 20a interruption section accommodation section, 20b disconnection section accommodation section, 32 accommodation boxes, 36, 40, 50, 60,
70,80 Shield plate.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−306282（ＪＰ，Ａ) 特開 平10−56709（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01H 31/32,33/42,33/70 H02B 13/02 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-306282 (JP, A) JP-A-10-56709 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01H 31 / 32,33 / 42,33 / 70 H02B 13/02
Claims (7)
を介して接離可能にされた第一と第二の断路部固定導体
を有する断路部及び上記第二の断路部固定導体と一体に
形成されて一体化固定導体を構成する第一の遮断部固定
導体とこの第一の遮断部固定導体に対向して配置され上
記第一の遮断部固定導体と遮断部可動接触子を介して接
離可能にされた第二の遮断部固定導体を有する遮断部を
設けた主回路開閉部、収容部に上記主回路開閉部を収容
する収容箱及びこの収容箱内の上記一体化固定導体の外
周側に設けられ上記収容部を上記断路部を収容する断路
部収容部と上記遮断部を収容する遮断部収容部とに区切
る区切り部材を備え、発電プラントに用いられ主発電機
が上記主回路開閉部を介して主変圧器に接続されるもの
である主回路開閉装置。A disconnecting portion having first and second disconnecting portion fixed conductors disposed opposite to each other and capable of being separated from each other via a disconnecting portion movable conductor; and the second disconnecting portion. Integral with fixed conductor
First cut-off part fixing that is formed to form an integral fixed conductor
The conductor and the first breaking part fixed conductor are arranged opposite to each other.
The first fixed conductor is connected to the first fixed conductor via the movable contact member.
A main circuit opening / closing section provided with a blocking section having a detachable second blocking section fixed conductor, a housing box housing the main circuit opening / closing section in a housing section, and an outside of the integrated fixed conductor in the housing box;
A main generator used in a power plant, comprising a partition member provided on a peripheral side and dividing the housing section into a disconnection section housing section that houses the disconnection section and a cutoff section housing section that houses the cutoff section.
Connected to the main transformer via the main circuit switch
Is the main circuit switchgear.
一及び第二の遮断部固定導体を所定方向に直線状に配設
したものであることを特徴とする請求項１に記載の主回
路開閉装置。Wherein providing the first and second disconnecting switch fixed conductor and the first and second blocking portions fixed conductor linearly in a predetermined direction
Main circuit switchgear according to claim 1, characterized in that to those were.
ら挿脱しうるようにしたことを特徴とする請求項２に記
載の主回路開閉装置。3. The main circuit switchgear according to claim 2, wherein the partition member can be inserted and removed from a direction intersecting a predetermined direction.
るとともに、区切り部材に切欠き部を設け、区切り部材
を上記切欠き部が一体化固定導体に嵌合するようにして
鉛直方向上方から挿脱しうるようにしたことを特徴とす
る請求項３に記載の主回路開閉装置。4. A notch portion is provided in the partition member so that the predetermined direction is a horizontal direction, and the partition member is vertically moved upward so that the notch portion is fitted to the integral fixed conductor. 4. The main circuit switchgear according to claim 3, wherein the main circuit switchgear can be inserted and removed from the main circuit.
るとともに、区切り部材をそれぞれ切欠き部を設けた第
一及び第二の切欠き部付区切り部材にて構成し、上記第
一の切欠き部付区切り部材を水平方向の一方側から挿入
して一体化固定導体にその切欠き部を嵌合し上記第二の
切欠き部付区切り部材を水平方向の他方の側から挿入し
て一体化固定導体にその切欠き部を嵌合したことを特徴
とする請求項３に記載の主回路開閉装置。5. The partitioning member is disposed so that a predetermined direction is horizontal, and the partitioning member is constituted by first and second notched partitioning members each having a notch. Inserting the notched separator member from one side in the horizontal direction, fitting the notch portion into the integrated fixed conductor, and inserting the second notched separator member from the other side in the horizontal direction. The main circuit switchgear according to claim 3, wherein the notch portion is fitted to the integral fixed conductor.
を介して接離可能にされた第一と第二の断路部固定導体
を有する断路部及び互いに対向して配設され遮断部可動
接触子を介して接離可能にされた第一と第二の遮断部固
定導体を有し上記第一の遮断部固定導体が上記第二の断
路部固定導体に電気的に直列に接続された遮断部を設け
た主回路開閉部並びに収容部に上記主回路開閉部を収容
する収容箱を備え、発電プラントに用いられ主発電機が
上記主回路開閉部を介して主変圧器に接続されるもので
ある主回路開閉装置の点検に際し、上記断路部を開放し
てから上記収容箱内に区切り部材を挿入し上記収容部を
上記断路部を収容する断路部収容部と上記遮断部を収容
する遮断部収容部とに区切ってから上記遮断部の点検を
行う主回路開閉装置の点検方法。6. A disconnecting portion having first and second disconnecting portion fixed conductors disposed opposite to each other and capable of coming and going through a disconnecting portion movable conductor, and disposed opposite to each other. The first and second disconnection portion fixed conductors are electrically connected in series with the second disconnection portion fixed conductor, and the first and second disconnection portion fixed conductors are configured to be able to contact and separate via a disconnection portion movable contact. A main circuit opening / closing unit provided with a shutoff unit connected to the storage unit and a housing box for housing the main circuit opening / closing unit in the housing unit, and a main generator used in a power plant is provided.
Connected to the main transformer via the main circuit switch
Upon inspection of a certain main circuit opening / closing device, the disconnecting portion is opened, and then a separating member is inserted into the accommodation box , and the accommodating portion accommodates the disconnecting portion accommodating the disconnecting portion and the interrupting portion accommodating the interrupting portion. An inspection method of a main circuit opening / closing device for inspecting the above-mentioned interruption part after being divided into a housing part.
と、区切り部材を接地する工程と、を設けたことを特徴
とする請求項６に記載の主回路開閉装置の点検方法。7. The inspection method for a main circuit switching device according to claim 6, further comprising a step of inserting a partition member made of a conductive material and a step of grounding the partition member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04366298A JP3350434B2 (en) | 1998-02-25 | 1998-02-25 | Main circuit switchgear and its inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04366298A JP3350434B2 (en) | 1998-02-25 | 1998-02-25 | Main circuit switchgear and its inspection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11242923A JPH11242923A (en) | 1999-09-07 |
| JP3350434B2 true JP3350434B2 (en) | 2002-11-25 |
Family
ID=12670076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04366298A Expired - Fee Related JP3350434B2 (en) | 1998-02-25 | 1998-02-25 | Main circuit switchgear and its inspection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3350434B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4781178B2 (en) * | 2006-06-28 | 2011-09-28 | 三菱電機株式会社 | Power switchgear |
-
1998
- 1998-02-25 JP JP04366298A patent/JP3350434B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11242923A (en) | 1999-09-07 |
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